Last updated: May 2026 · Pennsylvania IFTA rates current for Q1–Q4 2026
Pennsylvania · 74.1¢/gal · #1 Highest in US
Pennsylvania IFTA Calculator 2026 — Highest Diesel Tax in the US
At 74.1¢ per gallon, Pennsylvania has the highest diesel tax of all 48 IFTA states. Calculate your PA IFTA liability and find the best fuel stop options before entering the state.
Calculate Your Pennsylvania IFTA Tax
Gallons consumed in PA→
Net taxable gallons→
PA tax rate (2026)→74.1¢/gal
Estimated PA IFTA→
PA's rate is the highest in the US. Every gallon purchased in Delaware (22.0¢) instead of PA saves you 52.1¢ — that's $78 savings on a 150-gallon fill.
Pennsylvania IFTA Rates & Trucking Overview 2026
Pennsylvania's diesel tax rate of 74.1 cents per gallon is the highest among all 48 IFTA jurisdictions — significantly above California's 68.0¢ and nearly four times Texas's 20.0¢. The rate reflects PA's Oil Company Franchise Tax (OCFT), applied on top of the base state tax and adjusting based on wholesale diesel prices.
The clear fuel strategy: fill up completely in Delaware (22.0¢/gal) before running up I-95 or I-476 into PA. On a 150-gallon fill, that's $78 in IFTA savings. Maryland (36.8¢) is the second-best option from the south. West Virginia (35.7¢) is best for drivers entering from the west on I-68 or I-70.
Major Pennsylvania Trucking Routes
I-76 (Pennsylvania Turnpike): Ohio border east through Pittsburgh, Philadelphia to NJ Turnpike. Primary east-west toll corridor and one of the busiest truck routes in the US. I-81: Maryland border through Harrisburg, north to New York. Critical corridor for Southeast-Northeast freight connecting to I-78. I-78: Allentown to New York — key final-mile route into the NYC metro area. I-80: Ohio border east through Bloomsburg to New Jersey. Northern PA freight route bypassing turnpike tolls.
Pennsylvania IFTA — Frequently Asked Questions
What is the Pennsylvania IFTA diesel tax rate in 2026?
Pennsylvania's IFTA diesel tax rate for 2026 is 74.1 cents per gallon — the highest of all 48 IFTA states. PA's rate includes a flat state tax plus the Oil Company Franchise Tax (OCFT), which fluctuates with wholesale diesel prices and is updated semi-annually.
What is the best state to fuel up before entering Pennsylvania?
Delaware at 22.0¢/gal is the best option approaching from the south — a 52.1¢/gal savings vs. PA. Maryland (36.8¢) and West Virginia (35.7¢) are also significantly cheaper. A full 150-gallon tank in Delaware vs. PA saves roughly $78 in IFTA tax liability.
Why is Pennsylvania diesel tax so high?
Pennsylvania's high diesel tax funds Turnpike system bonds and state highway maintenance. The Oil Company Franchise Tax structure allows the rate to rise with diesel prices — when diesel is expensive, PA's tax rate goes up too. This is unique among states and explains why PA consistently leads national rate rankings.
How do I file IFTA if I'm based in Pennsylvania?
Pennsylvania-based IFTA carriers register and file quarterly returns with the PA Department of Revenue at mypath.pa.gov. Due dates: Q1 (Jan–Mar) April 30, Q2 (Apr–Jun) July 31, Q3 (Jul–Sep) October 31, Q4 (Oct–Dec) January 31. PA Turnpike tolls are separate — managed through E-ZPass.